A beautiful dark wood pattern, superbly tiled.
Source Omar Alvarado
Actually, there's no clouds in it, but I think it looks quite nice.
Source V. Hartikainen
This light background pattern has a texture of "frozen" surface with diagonal stripes. Here's an yet another addition to the collection of free website backgrounds.
Source V. Hartikainen
This is lovely, just the right amount of subtle noise, lines and textures.
Source Richard Tabor
Prismatic Abstract Geometric Background 2 No Black
Source GDJ
I love the movie Pineapple Express, and I’m also liking this Pineapple right here.
Source Audee Mirza
Could remind you a bit of those squares in Super Mario Bros, yeh?
Source Jeff Wall
This one is something special. I’d call it a flat pattern, too. Very well done, sir!
Source GetDiscount
Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Prismatic Abstract Line Art Pattern Background
Source GDJ
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Nicely executed tiling for an interesting pattern.
Source Ignasi Àvila Padró
Detailed but still subtle and quite original. Lovely gray shades.
Source Kim Ruddock
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Based on several public domain drawings on Wikimedia Commons. This was formed from a rectangular tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i
Source Firkin
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
Stefan is hard at work, this time with a funky pattern of squares.
Source Stefan Aleksić
The texture of this background image has some similarities with leather, and it's colored in a dark brown color. So, if you are looking for a dark brown background image for your website, this may be an option for you.
Source V. Hartikainen
A slightly more textured pattern, medium gray. A bit like a potato sack?
Source Bilal Ketab
It’s okay to be square! A nice light gray pattern with random squares.
Source Waseem Dahman